Malicious PDF — malware analysis report

Static analysis result for SHA-256 88d152bde2a32dea…

MALICIOUS

PDF

79.9 KB Created: 2021-03-23 02:54:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e609469ba88a9a8321f8e1f5b7c68d8c SHA-1: 46eb30307bba2662d7e9baad917e839bbfe4c1af SHA-256: 88d152bde2a32deafeb2fbd2966fd6806b963a0f17cee97103a9daf92492ac32
206 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of external links, many pointing to disposable hosting services, indicative of a link farm or SEO manipulation scheme. The presence of a 'SE_CALLBACK_LURE' heuristic suggests a potential phishing or scam pretext. While no scripts were explicitly extracted, the PDF structure and numerous URLs strongly suggest an attempt to redirect users to malicious or deceptive content, aligning with phishing and potentially further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://nipisod.ru/strik?utm_term=what+is+ic+in+company PDF link annotation
    • https://cdn.sqhk.co/xuwifoviwalo/2icjaid/counter_terrorist_game_for_pc_download.pdfIn PDF document text
    • https://cdn.sqhk.co/nebinefis/TNic3jh/brokerage_account_number_format.pdfIn PDF document text
    • https://cdn.sqhk.co/kifavubivelo/bjeiche/parallel_accounts_for_iphone.pdfIn PDF document text
    • https://gisipunav.weebly.com/uploads/1/3/1/6/131636927/4900642.pdfIn PDF document text
    • https://cdn.sqhk.co/sewuvavimebi/ijjieja/67926085484.pdfIn PDF document text
    • https://s3.amazonaws.com/dazutun/committee_on_climate_change_annual_progress_report.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/letter_to_the_board_of_education.pdfIn PDF document text
    • https://cdn.sqhk.co/fezemepusap/djfhewd/65002739970.pdfIn PDF document text
    • https://sopaxibifezubin.weebly.com/uploads/1/3/4/6/134608036/garunore.pdfIn PDF document text
    • http://salebox.shop/night_by_elie_wiesel_filepfj1e.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/37082488671.pdfIn PDF document text
    • https://cdn.sqhk.co/tixunadegu/bljelgf/dunkleosteus_vs_megalodon_bite_force.pdfIn PDF document text
    • https://s3.amazonaws.com/jivagajamav/list_of_automobile_industry_in_pune.pdfIn PDF document text
    • https://cdn.sqhk.co/xaselavub/1nAgehj/vapad.pdfIn PDF document text
    • https://cdn.sqhk.co/zujubokave/cichhia/nufikunavejinaje.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/advanced_search_techniques.pdfIn PDF document text
    • http://maykistore.ru/vodobolorazakujep016wp.pdfIn PDF document text
    • https://cdn.sqhk.co/pobopuwubox/hbdidCr/96967765324.pdfIn PDF document text
    • https://dipidedi.weebly.com/uploads/1/3/2/8/132815933/dokoledetemuk_gopetiti.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/7add52c0-9eca-4f59-902e-754dc7a7ca39/nadivineb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e91b6fc8-dab7-4891-a66e-86f56080297e/instep_bike_trailer_coupling.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7ae9acf-3383-4d14-bf2d-b5f8d9ede58b/static_and_dynamic_characters_in_the_adventures_of_huckleberry_finn.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f85c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF85C 5160 bytes
SHA-256: 1b722bbd8d44e240e01484c8766f4bc96967fddfc44416fb227c858434689cbc
font_01_sfnt_off000109d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109D9 11428 bytes
SHA-256: e87ff3fbdae6f85e1998e1473036f2d64f81588ba32e94e087020fd19e302dd8